Shutter-locking device for cameras



May 19, 1931. L. ROSEN 1,805,707

SHUTTER LOCKING DEVICE- FOR CAMERAS Filed Dec. 13, 1922 F163 Pic-.4

Patented May 19, i931 UNITED STATES PATENT OFFICE,

LOUIS w. ROSEN', or BROOKLYN, new YORK SHUTTER-LOOKING lmvIcn 'ron omnmls Application filed December 18, 1928. Serial No. 808,633.

, of the While my invention relates distinctly to loox cameras, as distinguished from the folding type, it is understood that my improved mechanism may be applied to any kind or" camera that employs means for exposing and shifting a film similar or substantlally similar to the means new 111 use in the conventional hox camera.

An important feature of my invention is the fact that my improved mechanism need not necessarily be huiltwith the camera, hut may he attached by hand, simply and efiectively, to the conventional camera after the latter has heen turned out in the ordinary way The advantage of t ies in the priviloge hy the'consumer to htain the conventional camera at his choice and at the ordinary price, and then to improve it with my mechanism at his own volition and whenever circumstances prompt to do so v Another important feature of my invention lies in the means for moving the conventicnei shutter lever. At present it is very inconvenient for the operator to grip this lever and move it, it does, in an angular course hack and tor-til in the regular slot. When at either end oi said slot, this lever is also very dificult to'pich up, followed by the'incvement just described, which I makes the hy the operator entirely unsteady. With my improved means, the operator isgiven not only a full grip at the start,

but this grip remains constant throughout the lever movement, regardless of the angular movement of said lever.

Another important feature of my invention consists of an auxiliary and detachable handle,-which can be attached to the horizontal' film-winding her in the conventional box camera, and the means for securing such attachment hy hand and without change of structure of the parts in said camera. This auxiliary handle can he stationarily placed. in a position horizontal with said bar, or at right angles to the same to facilitate the turning of scidlcer and the winding of the While auxiliary handles, quite similar to thi are now commonly used on the more expenslve or foldlng cameras, nevertheless they have to be installed at the factory, involving also a modification of structure of the simple bar on the box camera. With this additional feature of my invention, in view of the fact that I employ the auxiliary winding. handle because of operative connection with my shuttor-locking mechanism, and which mechanism can be attached manually as aforesaid, the owner of a box camera with the plain winding bar can attach all the related parts of my improved mechanism by hand and without the use of tool or chan e ol'E structure, despite the structure of the p ain winding bar. In

' cidentally, this same feature of my inventionmakes itpossible for the owner of a box camera with the plain winding bar, to secure for himself the use and advantage of this aux iliary and manually attachahle handle for the independent benefit derived from it, regard less oftlle installation or use of my shutter locking mechanism, 1

Another important feature of my invention is the provision for time exposure, for which exposure, in the conventional camera, the shutter lever must he operated hack and forth, and not just one way, in order to complete an exposure. With the means l employ, theimproved mechanism may he set to lock the shutter lever only after the exposure has been completed, regardless of the. double movement to efiect such exposure, and regardless also from which end the double movement of the lever is commenced.

In theaccompanying drawinfi, llhave illustrated a box camera where access to the film spools is had by sliding out the inner compartment after opening the door in the rear of the camera away "tram the shutter. Bein mindful of the other type, having no rear oor','and where access to the film spools is gained by sliding out the inner compartment, from the opposite or forward end of the camera, and to which compartment is attached the portion ofthe forward end of the camera carrying the shutter lever and mechanism, I have made my device all embracing for use in either type of camera till For a more particular description of my invention, reference is to be had to the accompaniing drawings, forming a part hereof, in w 10 Fig'. 1 is a top plan view of my improved mechanism, attached to the forward or shut ter end of a box camera revealed only in part, in which the parts are shown in unlocked position and set for time exposure.

position where number 19 touches number 3 midway between positions numbers 4 and 5.

Fig. 4 is a side view of the film-winding mechanism, including the auxiliary winding handle in right angle position and-means whereby it is detachably mounted.

Fig. 5 is a view similar to Fig. 1, with the mechanism set for time exposure but in such position as the parts will occupy after the shutter lever has been erated once begin,- ning at the left sid an the shutter is still open. Fig. also Shows a sli ht modification of structure in order to acilitate the start of the windin mechanism when part 48 is directly over t e end of part 45 while part 49 is in turned down position.

Throughout the various views of the drawings, sinnlar reference. characters designate similar parts. a

The outer wall 1 of the box camera carries and encloses the various parts necessary for the positioning and exposure of a film or other sensitive medium. Among such parts are the finder 2, the shutter lever 3 operating between positions 4 and 5, the film-windingbar 6, fixedthrough the hub 7, at one end of which hub is fixe the plate 8 and the key 9 for insertion in a corresponding recess of v the film spool for winding andshifting the film. The said hub 7, plate 8 andkey 9 revolve counter-clockwise in the bushing 10, at the top of which bushing, adjacent to the handle 6 is the cover 11 surrounding the hub 7 for keeping the latter in place. The said bushing has the circular flange 12, which flange 1s provided with the two sides 13 for attachment to the camera box wall 1 by means of the two rivets 14. The said wall is broken away sufficiently to register with the diameter of the bushing 10, as shown in Fi 4, and so as to fpermit the sliding of the ey 9 from out 0 contact with the film spool and into the recess of the bushing 10 until the plate 8 reaches the inner side of the cover 11.

The improved shutter-locking-mechanism will now be described. The plate 15 attached to the wall 1 of the camera box, by means of the fasteners 16 leading through the washers 17, has the aperture or slot 18 co-terniinous with positions 4 and 5, throu h which the shutter lever 3 protrudes and a ong WlllCh 1t operates. On each side of the shutter lever 3 are the grips-or flanges 19 and 20, rising at right angles and at e ual height from the arm 21, and of greater width of the lever 3. The said arm 21, which is loosely mounted on the shaft 22 suitably fixed to plate 15, carries with it the wire spring 23, attached to it by means of the rivet 24. ach side of said spring bears down with equal stress on the flanges 25 and 26 of the fork 27 the two prongs of which fork closely flank each side of the lower end of the arm 21 in parallel formation. At the lower end of said fork 27 is the projection 28 with the flange 29 rising at right angles from said projGQtlOD. The said fork 27, which is horizontallyflush with arm 21, is kept in horizontal position by the spread of the dial 30 fixed to the shaft 22. In contact with flange 29 of said projection is the top plate 31 fixed to plate 15 by means of the rivets 32. The said top plate is of somewhat greater height from istance apart than the.

the plate 15 than the fork 27 or projection 28, but lower than the height of said flange 29 rising from said fork. The upper portion of said top plate is sha d with the curved path 33 designed to be 1n close contact with and limit the circular movement of the flange 29 under stress of the spring 23 bearing down on the flanges of the fork 27. At either end of said path are the sides 34 and 35 respectively, which paths are parallel with projection 28 when the latter is in position as shown in Fig. 2 or Fig; 5, or the correspondingly opposite position alongside of side 35. At the bottom of said sides respectively are the bases 36 and 37, which bases are parallel with the bottom of the flange 29 when the latter is in position as shown in Fig. 2 and Fig. 5.

Mountedloosely on shafts 38 and 39, which 4 v shafts are fixed through the top plate 31 and plate 15, are the swans 40 and 41. The said swans are provided with the necks 42 and 43 respectively, are in free contact with the surface of said top plate and mesh with each other by means of the teeth in their rear. The

swan 40 is further provided with thefoot 44 and the extension 45 leading to the circumferential path shown by the broken line 46 over the flange 12. When the swan 40 is pivoted from position shown in Fig. 1 to position shown in Fig.2 (full lines), the end of said extension 45 will traverse the path indicated by the dot and dash line 46within contact distance by the tails 48 as the latter are moved counter clockwise as indicated by the arrow in path'47. The said'path 47 is traversed by the tails 48 emanating from the auxiliary mounted by way of suitable holes not shown and here decimated bv the numeral 50 handle 49, which handle is operatively 55,'each of which is designed to receive the collar 52 inv position between the inner side of the other tail 48 and the opposite wall of hub 7, the respective positions of said spring and collar being interchangeable.

The dial has the uniform cuts 53, 54, and

width of the flat spring 56. The said spring 56 is loosely mounted on shaft 22, and is kept in frictional contact with the dial 30 under pressure between said dial and the head 57 fixed to shaft 22. The said spring 56 rises somewhat from the plane where it is mounted and then tapers to such extent that it will lead through any one of said cuts 53, 54, and 55, under stress, at an angle sufiicient to be held from further movement in any direction by the side walls ofsaid cuts, but not sufiL cient to be in frictional contact with the surface of fork 27 beneath the flanges 25 and26.

In Fig. 5, the modified swan a is provided with the foot 44a and the extension 45a leading to the circumferential path shown by the broken line 47. The said foot 44a is provided with the fiat spring 58 attached by means of rivet 59, and which spring is in a position to be compressed when moved against the lower edge of the swan 41 as shown by the broken lines in Fig. 5.- The said extension 1512, at its end, has the bevel tapering fully to the bottom of said extension and which bevel tapers down to the edge of the path 47 when in position as shown hy broken lines in Fig. 5..

Assuming that my improved mechanism has not been built with the camera at the time of manufacture, and that the operator is in possession oi the conventional box camera, provided witha plain bar for winding the the method of attachment and position ingv is as follows: The plate 15, carrying the locking mechanism, is placed at the shutter end of the camera adjacent to the winding mechanism, withthe shutter operating lever 3 protruding through the slot 18, asshown 1,2, and 5. I In positioning the plate Jill 15, care should be taken to see that the slot 18 is exactly where the terminals 4 and 5 coincide with the right and left stopping positions of the shutter lever 3, and that the narrow width of said slot is centered with reference to the path of movement of said lever in order to have the roper room on each side for avoidance of friction; also that the exterior lines of plate 15 are exactly parallel with the adjacent edges of the camera box wall 1. "lln such position, the entire locking mechanism .will be in operative connection with the winding mechanism, especially the auxiliary handle 49 mounted on the latter. After this positioning, the operator will tap the wall 1 through the center of the holes where fasteners 16 are placed. The outer walls of most box cameras consist of cardboard or other soft substance, and it is easy then to bore a hole with a suitable hard substance through the wall 1 at each of the four places tapped, and which holes shall register with those in plate 15. The fasteners 16 are then inserted through the holes of said plate and wall, leading also through the washers 17 on the inner side of said wall. The two prongs. of said fasteners 16 are then bent as shown in Fig. 3, drawing .the plate 15 firmly to the top surface of the wall 1. The shutter-locking mechanism is thus inoperative position. The operator then proceeds to adjust his film-winding mechanism',though either mechanism may be attached first. Either the spring 51' or the collar 52 is slipped over-either end of the bar 6, the other endreceiving the other of said parts, The hole 50 of one end of the handle 49 is then placed in front of the end of the bar hearing the spring 51, and such end of handle is then inserted on said bar through said hole. The other end of the handle 49, not yet mounted on the bar 6, is pushed forward beyond the unmounted end of said bar, against the ten,- sion of the spring 51, a suificient distance to facilitate the entry of said end of bar into the remaining hole 50, after which entry the handle 49 is allowed to spring back, under the tension of spring 51, into the position which it will automatically assume for operative connection with the shutter-locking mechanism. The collar 52 forms a positive device for accurately keeping the handle 49 mounted in one fixed swinging position on the 8, and is of such length as to position the tails 48 for travel constantly in the path 47 for operative connection with the extension 45 of the shutter-locking mechanism. The

length of the spring 51 is not necessarily limited,'except that it, must be such that it will still be under compression after the handle 49 is properly mounted, and exert sufficient stress to make the tail 48 at the collarend of the bar 6 hug tightly the end of collar 52 in contact with said tail. Such tightness will assure the fixed positioning of the handle 49 as aforesaid, and will also tend to keep the said handle from ordinarily moving when camera with new roll of unexposed iihn;

This roll is insertedin the conventional way by access to the spool receptacle in the inner compartment, either through the. rear door shutter lever 3 passing through the open end.

of the ap between the flanges 19 and 20. For suc type of camera, the late 15 is separated along the line AA of ig. 1, with additional fasteners 16a where shown by broken lines in said .figure. However, the upper portion of plate 15, where the slot 18 is located, can then be dispensed with at the will of the operator, without seriously interfering with the effective operation of the shutterlocking mechanism, provided the lower and major portion of the plate 15 is attached in the same relative position as shown in the drawings.

After the ,new film roll is inserted, and the camera box closed, the operator proceeds to wind his film so as to set it for the first ex;-

posure as conventionally shown by the nu meral appearing in the ruby glass in the rear of the camera. To do this, the operator sets the handle 49 from the position shown in Fig. 2 to that shown in Figs. 1 and 4 namely at right angles to the winding mechanism. The handle 49 will remain stationary in that position, owing to the pressure of spring 51 as explained before. The operator then proceedsto turn this handle counter clockwise, as indicated by the arrow in the path 47, until the film is set for the first exposure. During the turning of handle 49, the locking mechanism is automatically unlocked, regardless of theformer position of the locking mechanism, and the operator can then freely work the shutter mechanism for the first exposure. The turning of the handle 49 much less than-one revolution, when at right angles to the winding mechanism, will always insure an automatic unlocking of the shutter-locking mechanism, and consequent freedom to take an exposure. The maximum length-of the present film roll in use in the conventional box cameras requires more than one revolution of the winding mechanism in order to position the film for each exposure, including the last exposure when the diameter of the winding spool is then the greatest. It is to be noted that when the handle 49 is turned as before stated, and in thecourse of its revolution the shutter-locking mechanism-is automatically unlocked, a continuation of the turning of. this handle,

7 in order to reach the next numbered position for exposure, no longer interferes with the unlocked position of the locking mechanism, and whatever contact there is is merely idle.

either one of the tails 48 when said handle is set in right angle position and more or less turned. The said extension 45 cannot get.

out of the position for contact, because at the position mentioned, as in Fig. 2, the foot 44, integral with extension 45, is prevented from further upward movement by contact with the lower edge of the swan 41 as shown in said figure. When the handle 49 is set in right angle position andturned counter clockwise for winding the film,the tail 48,nearer by revolution to the end of extension 45, forms contact with said end and carries it along the path shown by the dot and dash line 46 down to the position shown in full lines in Fig. 1, where it leaves said end; and synchronously at which time either the swan 40 or the swan 41 has fully thrown the projection 28 on to the curved path 33, against the tension of the spring 23, and thus unlocked the mechanlsm as shown bythe position in Fig. 1. In such last named position, the extension 45 is free topivot back to the position shown in full lines in Fig. 2, along the path 46, but when this happens the tails 48, in the continued course of their revolution, will merely bring the extension 45 back to the position shown by full lines in Fig.1, but this time without afiecting the projection 28 already on top of the curved path 33 out of shifting contact b either the neck 42 or the neck 43. While it is then possible for necks 42 and 43, meshed with each other, to come closer together and pivot theextension 45 away from path 47, the projection 28 will always be between said necks, and the moment the arm 21 is moved the projection 28 will form contact with either neck, according to its position, and in the course of its movement along the curved path 33 it will pivot the swans 40 and i 41, so that when the projection 28 finally drops along the side 34 or 35 the extension 45 will be within the path 47 in the position shown by the full lines in Fig. 2, and ready for subsequent contact to again unlock the the film in position without the knowledge or intention of the operator. When the by the operator, for at the time of grasping shutter mechanism is locked, either the flange 19 or 20 obstructs the movement of the I shutter operating lever 3, and consequently said lever is kept locked as against untimely pressure or outside interference. The very cat care that is often exerted to keep away om the shutter lever between exposures can thus he dispensed with in my improved mechanism, and this benefit forms a separate and distinct advantage in that not only is the exposed portion of the film protected, but even no unexposed portion of the film is wasted, When the operator is through winding th film and positioning the same for a new exposure, the handle 49 must be immediately re;- turned. from right angle posltlon to the position shown in Fig. 2. In the latter position,

go a portion of handle 49 rests on the cover ll,

and so remains stationary because of spring 51 as aforesaid, The portion of the width of the handle 49 extending beyond the bar 6 is less than the length of the tail 48 ex nding below said her when handle 49 is in right angle position, and such width is of such dimension as to allow perfect freedom of movement of the extension operating below said handle. Due to the fact that handle 49 rests on cover H, as mentioned above, the possibility ofthatportion 01' said handle dropping within the free operative plane of extension 45 is also avoided, as otherwise there would be an interference with the proper movement of said extension. it is to be noted that after winding the film, the handle 49 must not only he turned down as in Fig. but must remain in the position of path 4'5 reached when the winding was stopped, and that a subsequent movement of the shutter lever for an exposure will lock the shutter mechanism and bring the extension 45 to theposition shown in full lines in Fig, it might just be possible that after one particular windin of handle 4 s the same will remain in such position as to have one side oi the end of tail 48 immedi ately shove the position where extension 45 will pivot'to upon completion oi? exposure, 'il'nder the circnmtances oi the tail is and the extension being in that relative posi tion, when. the handle 4-59 is turned to right position will he jacked or lifted up top said extension, This position of very seldom, and will oo 1e reiative position lust men "nerons other possible hiscan he will automatically take care of this contact, I

so that neither the position of the huh 7 nor the changing position of the handle 49 willhe affected by it, When the shutter mechanism' is loched, the extension 450; will rest in the position similar to that shown. in full lines in Fig. 2 of extension 45, with the exec, tion that instead of the foot 44 being in irect contact with the lower edge of the swan 4:1,,

the fiat spring, 58, attached to the foot 4%? intervenes and will he in contact with said swan in position immediately heiore coin res sion. Should the handle 4, in turned d own position, he at the place of contact aioremen tioned with extension 45s, as soon as said handle is. turned to right angle position, the side 05 tail 48 will sidewipe the extension 45o by action on the bevel 60, against the tension of s ring 58, so that when said handle is folly" in right angle position, the relative position of the extension 456; and connected parts will he as shown in hroken lines in Fig. 5, hearing against the exterior of tail 48, After the mechanism as soon as either tail reaches said extension in the continued revolution of said handle.

it is to he remembered that in this type oi; camera, the shutter mechanism is nrovided for merely two kinds oi ergposnies, namely instantaneous and time, Jneons exposure requires ust one movement of the shutter lever 3, from position lto Si,

or vice versa, wherever the said lever hap posed to he last locatedand'which singled movement hath opens and closes the shutter.

The time exposure, and which is seldom resonted to, requires two movements of the shut is from and flinch the po last reste either at t or 5i, one and eepe open the the and I. t n can.

was mechanism llm wonle lose, s in the instantaneous await the operator movement closes The instantawould be unable to return lever 3 to its first ition in order to close the shutter. The

ey to the unlocking being the winding of the filmin the manner aforesaid, the o' rator is not read to wind the film unti the shutter is close time exposure by means of the al 30, which is fixed to the shaft 22, the latter being fixed to the plate also by use of the flat spring 56, mounted loosel on shaft 22 between the head 57 and said 'a'l. While the camera is, used for instantaneous exposures, the spring 56 is allowed to rest under its own stress in neutral position through the cut 55 of said dial, as shown in Fig; 2.- With this setting, the fork 27 is free to slide up and down from locking to unlocking position. Should a time exposure be desired, ,and for example the shutter lever '3 is then located at posltion 4,

' before operating the shutter lever, the rin '56 is lifted and turned to cut 54 and al owe to rest through that cut, under its own stress,

,movement keeping the flange 29 above the at precisely m the same position as if sinpilar. Ibodimentof my invention, it is obvious that path 33, as shown in Fig. 5. In the latter position, the mechanism will remain unlocked and freefor the return movement of lever 3. On the return movement of said lever there is no obstruction for the opposite flange 25, and consequently the fork 2 is free to drop and automatically lock the mechanism. It is apparent that should the shutter lever 3 be located at the opposite position 5 before 0 r erating said lever for a time'exposure, t e spring 56 is set throu h cut 53, with the same result as aforesaid. t is thus also possible to take a succession of time ex osures without a further adjustment or sett ng, and with the shutter lever 3 locking automatically only after-the completion of each time ex sure. Only whenit is desired to revert to mstan- -taneous exposures is the spring 56 moved to ppsition in cut .55 remaining there without rther attention during all t e time that mstantaneous exposures are uninterruptedly taken.

The ga between the flanges 19 and 20 must be of su cient width to allow flange 29 to be pivoted on top of path 33 when the mechanism is first unlocked, without I mutual interference between the arm 21 and accompanying parts, and the shutter lever 3. The swans 40 "and 41 and adjacent parts are symmetrical in operation as to unlocking the mechanism from either '------side,ian5l;while one is in. operative contact with flange '29'the other moves or rests idly on the return movement of lever 3. Consequently, I have rovided for the shaft 22.

contact were had. For a certain distance of the movement in unlocking the mechanism the neck 42 or 43 lifts the fork 27 inst the stress of the s ring 23, and when t e top of ath 33 is reac ed and clearance is had of eit er the side 34 or theside 35, either neck throws back the fork 27 on to the path 33 as before stated, synchronously at which time there is no further movement of either of said necks, due to the fact that the tail 48--has 7 then passed contact with extension 45. The swans 40 and 41 are fulcrumed sufliciently far from the tails 48 to make the weight of lifting the fork 27, against the stress of s ring 23, comparatively light when the han le 49 is turned for winding the film.

When the mechanism is in locked osition, the prongs of fork 27 are beside a su stantial portion of the lower end of arm 21, which position, together with the interference of the sides 34 or 35 against the return movement of the projection-28, forms a positive stop against the return movement o ever 3, the said arm and forkbecoming integral as it were againstsuch return'mpv e'ment. of said lever. Insaid locked position also the lever 3 prevents the projection 28 and all parts conv nected thereto from being pivoted away from either the side 34 or 35 m the direction opposite to the return movement of said .proection. v It is also to be noted that the said lever 3,

pivotally mounted in the conventional way,

operates with an an lar movement from and to the exterior sur ace =of'the outer wall 1 of the camera, alternately starting and ending at positions 4 and 5 respectively, at which two positions it is of equal and minimum heightf-rom the said surface. The shutter lever 3 is shifted by means of manual pressure applied to the outer side of flange 19 -or 20 in the direction said lever can move.

enough toward the flanges 19 and 20 to guard 4 the horizontal position of the-arm 21, otherwise braced ver little due to the position of he operator is not concerned with touching the lever-3 directly, nor with the an lar movement of said lever and controls t e entire shifting of said shutter 1ever by the uniformly horizontal movement of thearm 21." In view of this, the flanges 19 and 20, both of equal height, have been made hi h enough to cover the height of the lever 3 m the surface of the camera wall 1 when "saidleverassumes its maximum height from said wall, that is midwliy between ositions 4 and 5, as indicated in g 3 Whi I have shown and described one em it is not restricted thereto, but is broad enough to cover all structures that come Within the scope of the annexed claims.

Having thus described my invention, what I claim is: y

1. In a camera of the class described, means for exposing a portion of film, either for instantaneous ortime ex osure, means for shifting said portion a ter each exposure has been made, and means for automatically locking said exposure means, after each and either kind of said exposures has been completed regardless of any prior shifting of film and preventing operation as for a succeeding exposure until tne exposed portion of film has been shifted, all of said exposure means being structurally independent of said locking means, and all. of said locking means I being assembled on one base and demountably superimposed as a unit on an external surface of said camera.

2. in a camera of the class described, means for exposing a wportion of film, either for instantaneous or time exposure, means for shifting said portion after each exposure has been made, and means for automatically lociing said exposure means,after each and either kind of said exposures has been completed regardless of any prior shifting of film, and preventing-operation as for a second exposure of said portion while the same has not been shifted, all of said exposure means being structurally independent of said locking means, and all of said locking means being assembled on one base and demou-ntably each exposure has been made, said exposure means containing in its construction a camera Eli , exposure stir-notion e q O trotting; with angular. movement tr box and a lever for opening and closing the shutter, means operatively engaged with said lever for automatically locking the same after each and either kind of said exposures has been made regardless of any prior shiftingof film, and means operatively engaged with said shifting mechanism for automatically unlocking said lever after each portion of film has been shifted, all of said exposure means being structurally independent of said locking means, and all of said locking means being assembled on one base and demounts superimposed as a unit on an external ably 1d camera coma um camera boa and mower i to the exterior of said camera box for open ing and closing the shutter, means operatively engaged with said lever for automatically locking the same after each and either kind of said exposures has been made regardless of any prior shifting of film, the said lever engaging means containing in its construction an arm with manual gripping means functioning in a horizontal plane for operating the said lever, the said lever being structural ly independent of said arm, and the said arm being so disposed as to permit the loci-:- ing and unlocking by said locking mean- Without interfering with the normal structune or movement of said lever,

5,, in a camera of the class described, means for talringon a film either instantaneous or time exposures, said means containing in. its construction a camera box and a lever for openin and closing the, shutter, means operative y associated with and for operating said lever for each exposure, and means connected with said associated means for automatically preventing the latter from being again operated after each'ancl either kind of said exposures has beencompleted.

In a camera of the class described, means for taking on a film either instantaneous or time exposures, mechanism for shifting said film after each exposure has been made, said exposure means congaining in its construcsaid associated means and with said shifting mechanism for automatically preventing the lever rrom being aga n operated, after each and either kind of said exposures has been completed regardless of any prior shifting of film, until the exposed portion of film has been shifted,

7, In a camera of the class described, camera box with means for taking on a film either instantaneous or time exposures, and means for shifting said film, said exposure means containing in its construction it shutter, and a lever for opening and closing-the same, an arm pivoted-at one end and associated with said lever for operating and there after looking the same, the said contain ing in its construction at the opposite end flange on either side-oil said lever greater distance apart than the wines said lover, a iforlr slidably mounted on s with a spring from the latter a to former, dial mount arm and i e, a projection leading for guiding pro is nested. wi said projectile position r en I nge against a e tensile v i a plate for carrying all or asse Hill releases, and meanssuitably mounted on said the exposed portion of film is being shifted.

8. In a camera of the class described, a shutter mechanism with means for taking either an instantaneous or a time exposure, a lever for operating said shutter mechanism, and means operatively associated with said lever for automatically locking the same only after the shutter has been opened and closed and regardless of which kind of said exposures has been taken, all of said shutter mechanism, exposure taking means and the said lever being structurally independent of said locking means, and all of said locking means being assembled on one base anddemountably superimposed as a unit on an external surface of said camera.

9. In a camera of the class described, a shutter mechanism for exposing portions of film either for instantaneous or time exposures, said mechanism containing in its construction a lever for operating the same, means operatively associated with said lever for automatically locking the same after any portion of the film has been exposed'and either kind of said exposures completed, a film-winding mechanism, and means emanating from said film-winding mechanism and from said operatively associated means for automatically unlocking said lever while the film is being shifted without interference with the normal operation of said film-winding mechanism, all of said exposure means being structurally independent of said locking means, and all of said locking means being assembled on one base and demountably superimposed as a unit on an external surface of said camera. 7

10. In a camera of the class described, a

camera box containing a shutter mechanism with means for taking either instantaneous or time exposures, a lever for operating said shutter 'mechanism, said lever and mechanism being separable from one portion of said box or not, means operativelyas'sociated with saidlever and mounted on said portion bar fixed therethrough laterally extendin beyond each side of said stem, additiona means detachably mounted on said bar adapted withdrawably to automatically function in a plane lower than said film winding plane, said mounting containing in its construction a guide and a spring interchangeably mounted on said bar extensions for keeping said additional means in predetermined operative position, and means emature.

LOUIS W. ROSEN.

for automatically locking said lever after an exposure of film has been completed, said associated means being such as not to interfere with the separation of said lever or with the return thereof, all of said shutter mechanism,

exposure taking means and the said lever being structurally independent of said locking means, and all of said locking means being assembled on one base and demountably su-- perimposed as a unit .on an external surface of said camera. 1

11. In a camera of the class described a. shutter locking mechanism, a winding device with means for 0 rating the same-to wind a film, said means hzing rotatable in a certain plane for winding said film and containing in its construction a stem with a crosswise nating from said shutter locking mechanism is a and travelling in such lower plane for o rwith said a di- 

